protected void Button1_Click(object sender, EventArgs e)
  {
    string strtxtPath = "C://freezip//free.txt";
    string strzipPath = "C://freezip//free.zip";
    System.Diagnostics.Process Process1 = new System.Diagnostics.Process();
    Process1.StartInfo.FileName = "Winrar.exe";
    Process1.StartInfo.CreateNoWindow = true;

    //// 1
    ////压缩c:/freezip/free.txt(即文件夹及其下文件freezip/free.txt)
    ////到c:/freezip/free.rar
    //strzipPath = "C://freezip//free";//默认压缩方式为 .rar
    //Process1.StartInfo.Arguments = " a -r " + strzipPath + " " + strtxtPath;

    //// 2
    ////压缩c:/freezip/free.txt(即文件夹及其下文件freezip/free.txt)
    ////到c:/freezip/free.rar
    //strzipPath = "C://freezip//free";//设置压缩方式为 .zip
    //Process1.StartInfo.Arguments = " a -afzip " + strzipPath + " " + strtxtPath;

    //// 3
    ////压缩c:/freezip/free.txt(即文件夹及其下文件freezip/free.txt)
    ////到c:/freezip/free.zip 直接设定为free.zip
    //Process1.StartInfo.Arguments = " a -r "+strzipPath+" " + strtxtPath ;

    //// 4
    ////搬迁压缩c:/freezip/free.txt(即文件夹及其下文件freezip/free.txt)
    ////到c:/freezip/free.rar 压缩后 原文件将不存在
    //Process1.StartInfo.Arguments = " m " + strzipPath + " " + strtxtPath;

    //// 5
    ////压缩c:/freezip/下的free.txt(即文件free.txt)
    ////到c:/freezip/free.zip 直接设定为free.zip 只有文件 而没有文件夹
    //Process1.StartInfo.Arguments = " a -ep " + strzipPath + " " + strtxtPath;

    //// 6
    ////解压缩c:/freezip/free.rar
    ////到 c:/freezip/
    //strtxtPath = "c://freezip//";
    //Process1.StartInfo.Arguments = " x " + strzipPath + " " + strtxtPath;

    //// 7
    ////加密压缩c:/freezip/free.txt(即文件夹及其下文件freezip/free.txt)
    ////到c:/freezip/free.zip 密码为123456 注意参数间不要空格
    //Process1.StartInfo.Arguments = " a -p123456 " + strzipPath + " " + strtxtPath;

    //// 8
    ////解压缩加密的c:/freezip/free.rar
    ////到 c:/freezip/  密码为123456 注意参数间不要空格
    //strtxtPath = "c://freezip//";
    //Process1.StartInfo.Arguments = " x -p123456 " + strzipPath + " " + strtxtPath;

    Process1.Start();  
    if (Process1.HasExited)
    {
      Response.Write("完成");
    }
  }